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1FWM

Crystal structure of the thymidylate synthase R166Q mutant

Functional Information from GO Data
ChainGOidnamespacecontents
A0000287molecular_functionmagnesium ion binding
A0003723molecular_functionRNA binding
A0004799molecular_functionthymidylate synthase activity
A0005737cellular_componentcytoplasm
A0005829cellular_componentcytosol
A0006231biological_processdTMP biosynthetic process
A0006235biological_processdTTP biosynthetic process
A0006417biological_processregulation of translation
A0008168molecular_functionmethyltransferase activity
A0009165biological_processnucleotide biosynthetic process
A0009314biological_processresponse to radiation
A0016740molecular_functiontransferase activity
A0016741molecular_functiontransferase activity, transferring one-carbon groups
A0032259biological_processmethylation
A0042803molecular_functionprotein homodimerization activity
B0000287molecular_functionmagnesium ion binding
B0003723molecular_functionRNA binding
B0004799molecular_functionthymidylate synthase activity
B0005737cellular_componentcytoplasm
B0005829cellular_componentcytosol
B0006231biological_processdTMP biosynthetic process
B0006235biological_processdTTP biosynthetic process
B0006417biological_processregulation of translation
B0008168molecular_functionmethyltransferase activity
B0009165biological_processnucleotide biosynthetic process
B0009314biological_processresponse to radiation
B0016740molecular_functiontransferase activity
B0016741molecular_functiontransferase activity, transferring one-carbon groups
B0032259biological_processmethylation
B0042803molecular_functionprotein homodimerization activity
Functional Information from PDB Data
site_idAC1
Number of Residues6
DetailsBINDING SITE FOR RESIDUE SO4 A 265
ChainResidue
AARG21
ASER167
ACB3266
AHOH641
BARG426
BARG427

site_idAC2
Number of Residues6
DetailsBINDING SITE FOR RESIDUE SO4 A 565
ChainResidue
BARG321
BSER467
BCB3566
AARG126
AARG127
AHOH616

site_idAC3
Number of Residues17
DetailsBINDING SITE FOR RESIDUE CB3 A 266
ChainResidue
AGLU58
AILE79
ATRP80
ATRP83
ATYR94
ALEU143
AALA144
ACYS146
APHE176
AASN177
ALYS259
AVAL262
ASO4265
AHOH635
AHOH639
AHOH692
AHOH732

site_idAC4
Number of Residues15
DetailsBINDING SITE FOR RESIDUE CB3 B 566
ChainResidue
ASO4565
BHIS351
BILE379
BTRP380
BTRP383
BTYR394
BLEU443
BALA444
BCYS446
BGLY473
BPHE476
BASN477
BHOH620
BHOH640
BHOH753

Functional Information from PROSITE/UniProt
site_idPS00091
Number of Residues29
DetailsTHYMIDYLATE_SYNTHASE Thymidylate synthase active site. RriIvsaWNvgeldkma.....LaPCHaffQFyV
ChainResidueDetails
AARG126-VAL154

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues2
DetailsActive site: {"description":"Nucleophile","evidences":[{"source":"HAMAP-Rule","id":"MF_00008","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"2223754","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"8973201","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"9416600","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues14
DetailsBinding site: {"description":"in other chain","evidences":[{"source":"PubMed","id":"2223754","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"8973201","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1KCE","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"2TSC","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues4
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"8312270","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"1TYS","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues2
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"2223754","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"8973201","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1KCE","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"2TSC","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues6
DetailsAnnotated By Reference To The Literature 1b02
ChainResidueDetails
AHIS207
AGLU58
AASP169
ASER167
ACYS146
AASP205

site_idCSA2
Number of Residues6
DetailsAnnotated By Reference To The Literature 1b02
ChainResidueDetails
BASP469
BSER467
BHIS507
BASP505
BGLU358
BCYS446

site_idCSA3
Number of Residues3
DetailsAnnotated By Reference To The Literature 1b02
ChainResidueDetails
ASER180
AASN177
ACYS146

site_idCSA4
Number of Residues3
DetailsAnnotated By Reference To The Literature 1b02
ChainResidueDetails
BSER480
BCYS446
BASN477

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PDB entries from 2026-02-11

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